Thanks Martin...The first one did the trick! I didn't try the second command, but, I'm sure that it would also work ;)
Mike
>Hi Mike, > >
>* Table_A.PK =Table_B.PK
>SELECT * FROM Table_A WHERE NOT EXISTS ( SELECT Table_B.PK FROM Table_B WHERE Table_B.PK=Table_A.PK)
>
>* OR
>SELECT * FROM Table_A WHERE NOT Table_A.PK IN ( SELECT Table_B.PK FROM Table_B WHERE Table_B.PK=Table_A.PK)
>
